Can you define sub-netting and discuss how it is used to manage an IT infrastructure?
When asked to define the term or concept, you should recognize the question as being technical. Technical questions should be addressed briefly and directly, without any embellishment. You should also anticipate follow-up questions after you responded to the interviewer. A series of follow-up questions indicates that this topic is important to the organization and permits you to expand your answers.
"Sub-netting is the practice of partitioning or segmenting a portion of the TCP/ IP network into distinct and separate segments. The purpose of this is to improve the network's performance and make the network easier to manage."
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Anonymous Answer
Sub-nets as the name implies are Sub Networks. The use of subset is essential for maintaining a network and keeping it secure. For example in a school you may encounter the staff sub-net and the student sub-net, this approach not only helps when managing devices, since you can apply certain configurations in a blanket manner to all devices on the sub-net, but it impedes any malicious actor with access to the student network to jump and compromise the staff's network. A few decades ago before the invention of the Vlans, the primary and only method of logically isolating devices or groups of devices was using sub-nets. Still, in today's landscape sub-nets are essential to ensure you don't have a flat network vulnerable to malicious actors jumping from box to box in your network.
Amanda's Feedback
I like that you discuss security in your response because cyber security is always a top priority in our digital environment. You can expand this answer even further by defining a sub-net as a segmented piece of a larger network and talking about how subnetworks also improve network efficiency by minimizing traffic.
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